secretary of defense leon panetta said thursday that they carried out the attack that killed the ambassador to libya and three other americans. >> the reason i think pretty clearly it was a terrorist attack is because a group of terrorists obviously conducted that attack on the consulate. and against our individuals. what terrorists were involved i think still remains to be determined by the investigation. but it clearly was a group of terrorists who conducted that attack against that facility. >> senior correspondent john miller, former assistant director of national intelligence joins us. what's going on? why can't the fbi get in there and do what they were sent there to do? >> the security situation on the ground there is so brittle that the libyan government is very reluctant to have a team of a couple of dozen fbi people go into benghazi when the only people they could get to protect them are the militias. right now they don't trust any of the militias. the key militia that's in charge of protecting the hospital where the wounded were taken from this attack is suspected to be behind th